CODEWITHSUNDEEP
classpython-3.xdictionarypandas
Kimmy
Kimmy

Reputation: 71

Error: 'set' object has no attribute.. - Python3

I'm working on a program that needs to take rows I have in a table from pandas and store each one as a dictionary entry with one column as the key and the others stored in an object with that key. It seems to work ok and I get no errors when it's looping to add them to the dictionary, but if I try to call a specific item from that dictionary using syntax like SeqDict['key'].classattribute, I'm getting an error saying "'set' object has no attribute 'classattribute'. Am I using the wrong syntax or is there something else wrong with my code? This is the first time I have ever tried programming so sorry if I have made a stupid mistake or my code is written very inefficiently.

The first half of my code seems to work fine

import os
import pandas as pd

print("Please move your CSV to the desktop before continuing.")
csvfilename = input("Enter the name of your CSV file: ")
desktopfilepath = os.path.expanduser("~/Desktop/")
csvfilepath = desktopfilepath + csvfilename

seqtable = (pd.read_csv(csvfilepath, 
                    dtype=str, 
                    header=0, 
                    usecols=["Well", "Core Sample ID", "Sample ID", "Exon"]))

newseqtable = pd.DataFrame.dropna(seqtable)
print(newseqtable)

y = len(newseqtable.index)
print(y, "files to rename.")

I'm assuming this part is where I'm doing something wrong

class SeqID:
    def __init__(self,well,sequence,exon):
        self.well = well
        self.sequence = sequence
        self.exon = exon
SeqDict = {}

x = 0
for x in range(y):
    ID = newseqtable.iat[x,1]
    well = newseqtable.iat[x,0]
    sequence = newseqtable.iat[x,2]
    exon = newseqtable.iat[x,3]
#    print(ID + "," + well + "," + sequence + "," + exon + ".") #This works fine when I choose to run it
    SeqDict[ID] = {SeqID(well,sequence,exon)}
SeqDict  #This prints the dictionary keys I would expect

SeqDict['key'].well  # This returns the error when I insert a key

Thanks

Upvotes: 0

Views: 276

Answers (1)

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 799520

This line:

SeqDict[ID] = {SeqID(well,sequence,exon)}

creates a 1-set. You probably meant:

SeqDict[ID] = SeqID(well,sequence,exon)

Upvotes: 2

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